California Flu Watch by Region

CEP America (CEP) continues the California Flu Watch. The Group’s over 1,100 providers treat almost 2.5 million patients annually. As the largest provider of emergency care in California, CEP emergency room visits capture a detailed picture of medical complaints on almost 50,000 patients per week who seek health care in over 50 emergency rooms in California. The Flu Watch Center reports the prevalence on a weekly basis of flu-related illnesses as a percentage of total emergency room visits; the data reflects a diverse, state-wide population from the 50 communities and the multiple hospital clients served by CEP including district, county, independent, non profit, for-profit, and academic hospitals, as well as trauma centers. Moreover, the data represents a diverse geographic, economic, and demographic population of patients, including many who are indigent and underinsured. Data for this information is developed from sites served by CEP  throughout the state. Data is filtered through a proprietary data warehouse – MedAmerica Analysis and Reporting System (MARS). This data is distinctly different from other data collected by CDHS from statewide primary care offices and large managed care organizations, but taken together with these other sources provides a broader picture of influenza related illnesses in California. For more information on Flu Surveillance, please go to the California Department of Health Services Flu Surveillance.